EP3161246B1 - A downhole flow control device - Google Patents
A downhole flow control device Download PDFInfo
- Publication number
- EP3161246B1 EP3161246B1 EP15731378.4A EP15731378A EP3161246B1 EP 3161246 B1 EP3161246 B1 EP 3161246B1 EP 15731378 A EP15731378 A EP 15731378A EP 3161246 B1 EP3161246 B1 EP 3161246B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sleeve
- control device
- opening
- flow control
- tubular
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000007789 sealing Methods 0.000 claims description 27
- 239000012530 fluid Substances 0.000 claims description 24
- 238000007373 indentation Methods 0.000 claims description 17
- 230000004888 barrier function Effects 0.000 claims description 14
- 238000004891 communication Methods 0.000 claims description 10
- 239000003921 oil Substances 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 239000007789 gas Substances 0.000 description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000010779 crude oil Substances 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000011499 joint compound Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/124—Units with longitudinally-spaced plugs for isolating the intermediate space
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/124—Units with longitudinally-spaced plugs for isolating the intermediate space
- E21B33/1243—Units with longitudinally-spaced plugs for isolating the intermediate space with inflatable sleeves
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/14—Valve arrangements for boreholes or wells in wells operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B2200/00—Special features related to earth drilling for obtaining oil, gas or water
- E21B2200/06—Sleeve valves
Definitions
- the present invention relates to a downhole flow control device for controlling a flow of a fluid from a borehole into a well tubular structure and/or from the well tubular structure into the borehole. Furthermore, the present invention relates to a downhole system.
- valves, frac ports and inflow control devices e.g. known from US2012/325500 , WO2013/150304 and EP0224942
- inflow control devices e.g. known from US2012/325500 , WO2013/150304 and EP0224942
- scales and debris are settling in openings of the valves, ports and devices.
- this is experienced inside the well tubular structure, causing the flow area in the openings to be decreased and in some circumstances even closed for flow, resulting in the valves, ports and devices not functioning properly.
- sealing elements arranged in connection with the openings may be damaged, and this may disadvantageously lead to leakage from the valves, ports or devices, even in circumstances where they are supposed to be closed.
- the second sleeve may be engaged with the second sleeve part in the first position and is disengaged from the second sleeve part in the second position.
- the first position may be an initial position of the downhole flow control device.
- the second sleeve may have a through-going bore in which the engagement element is arranged.
- the base tubular may have an elongated projection extending along the axial axis for pressing the engagement element in engagement with the second sleeve until reaching the second position.
- the base tubular may have a recess for receiving the engagement element at the second position.
- the downhole control device may be configured to open the first opening by movement of the first sleeve and the second sleeve in a first direction along the axial axis and to close the first opening by movement of the first sleeve and the second sleeve in a second direction, the second direction being the opposite direction in relation to the first direction, along the axial axis.
- the recess may have a first recess end and a second recess end, the second recess end being closest to the first opening, the first recess end having a first end face which is inclined and the second recess end having a second end face extending in a direction substantially perpendicular to the axial axis.
- the second sleeve may be prevented from sliding past the first opening when the engagement element is in engagement in the recess and abuts the second end face.
- the inclined first end face of the recess may be configured to disengage the engagement element from the recess by the engagement element sliding up from the recess along the movement of the second sleeve in the second direction.
- the engagement element may be spring-loaded.
- the engagement element may be a spring-loaded circlip.
- the engagement element may comprise a spring.
- Said spring may be a leaf spring.
- the downhole flow control device may comprise a plurality of engagement elements.
- the downhole flow control device as described above may further comprise a first sealing element and a second sealing element, the first sealing element being arranged in a first circumferential groove in the base tubular on a first side of the first opening and the second sealing element being arranged in a second circumferential groove in the base tubular on a second side of the first opening, the second side being opposite the first side.
- sealing elements may be chevron seals.
- first sealing element may be arranged between the first sleeve part and the base tubular
- second sealing element may be arranged between the first sleeve part and the base tubular in the first position and between the second sleeve and the base tubular in the second position.
- the second sleeve part may comprise a plurality of second openings.
- first sleeve part and the second sleeve part may be produced as one sleeve.
- first sleeve part may be a third sleeve which may be connected with the second sleeve part.
- the third sleeve may be arranged between the second sleeve part and the base tubular.
- the first sleeve part may have a first end and a second end
- the second sleeve may have a first end and a second end, the first end of the first sleeve part abutting the second end of the second sleeve in the first position.
- a gap may be formed between the second end of the second sleeve and the first end of the first sleeve part when the second sleeve is prevented from movement in the first direction and the first sleeve part continues to move past the first opening, whereby fluid communication between the first opening and the second opening is provided via the gap.
- the second sleeve part may have an inner face and a groove in the inner face for engagement with a key tool of a downhole tool.
- the base tubular may be mounted from at least two tubular sections.
- the first opening may be smaller than the second opening.
- the flow control device may be a frac port or an inflow control device or a valve.
- openings may be through-going.
- the present disclosure also relates to a downhole system for controlling a flow of a fluid from a borehole into a well tubular structure and/or from the well tubular structure into the borehole, comprising
- the downhole system as described above may further comprise an annular barrier, the annular barrier comprising:
- the annular barrier may be a first annular barrier
- the system as described above may further comprise a second annular barrier, both adapted to be expanded in an annulus between the well tubular structure and a wall of the borehole or another well tubular structure downhole for providing zone isolation of a production zone positioned between the first and second annular barriers, the downhole flow control device being arranged opposite the production zone.
- one or both ends of the expandable sleeve may be connected with the tubular part by means of connection parts.
- the expandable sleeve may be made of metal.
- tubular part may be made of metal.
- an opening may be arranged in the tubular part.
- sealing means may be arranged between the connection part and the tubular part or between the end of the expandable sleeve and the tubular part.
- the annular space may comprise a second sleeve.
- the downhole system may comprise a plurality of flow control devices.
- Fig. 1 shows an embodiment of a downhole flow control device 1 according to the present disclosure in a cross-sectional view.
- the downhole flow control device 1 is adapted to control a flow of a fluid from a borehole 2 into a well tubular structure 10 and/or from the well tubular structure 10 into the borehole 2.
- the downhole flow control device 1 comprises a base tubular 3 having an axial axis 4 and being adapted to be mounted as part of the well tubular structure 10, the base tubular 3 having a first opening 5.
- the first opening 5 is arranged opposite the borehole 2.
- the downhole flow control device 1 furthermore comprises a first sleeve 6 which is arranged within the base tubular 3.
- the first sleeve 6 has a first sleeve part 7 and a second sleeve part 8 with a second opening 9.
- the first sleeve 6 is adapted to slide along the axial axis 4 for at least partly aligning the first opening 5 with the second opening 9, so that fluid communication may be provided between the borehole 2 and an inside 11 of the well tubular structure 10.
- the downhole control device 1 is configured to open the first opening 5 by movement of the first sleeve 6 and the second sleeve 12 in a first direction along the axial axis 4 and to close the first opening 5 by movement of the first sleeve 6 and the second sleeve 12 in a second direction, the second direction being the opposite direction in relation to the first direction, along the axial axis 4.
- a second sleeve 12 is arranged at least partly between the second sleeve part 8 and the base tubular 3, and an engagement element 13 is arranged for engaging an indentation 14 of the second sleeve part 8 in a first position which is the position shown in Fig. 1 .
- the engagement element 13 is furthermore adapted to disengage the indentation 14 of the second sleeve part 8 in a second position when the first and second sleeves 6, 12 have been slid along the axis 4 in relation to the base tubular.
- the second position is shown in Figs. 2 and 3 .
- the second sleeve 12 When the engagement element 13 is engaged in the indentation 14 of the second sleeve part 8, the second sleeve 12 will slide along the axial axis 4 together with the first sleeve 6, until the engagement element 13 disengages the indentation 14, causing the first sleeve 6 to be capable of sliding further along the axial axis 4 without the second sleeve 12 following along.
- the first and second sleeves abut each other, preventing scale or debris from precipitating as there is no opening therebetween to precipitate in.
- the downhole flow control device 1 also comprises a first sealing element 22 and a second sealing element 23.
- the first sealing element 22 is arranged in a first circumferential groove 24 in the inner face of the base tubular 3 on a first side of the first opening 5.
- the second sealing element 23 is arranged in a second circumferential groove 25 in the base tubular 3 on a second side of the first opening 5, where the second side is opposite the first side.
- the sealing elements 22, 23 are chevron seals.
- the first sealing element 22 is arranged between the first sleeve part 7 and the base tubular 3.
- the second sealing element 23 is arranged between the first sleeve part 7 and the base tubular 3 in the first position, as shown in Fig. 1 , and between the second sleeve 12 and the base tubular 3 in the second position, as shown in Fig. 3 . Due to the fact that the first sleeve and the second sleeve abut each other when passing the second sealing elements, the risk of the sealing elements being damaged is minimised, and it is hence obtained that their sealing properties are maintained, since the opening is not created until the second sleeve has passed the second sealing element 23.
- the embodiment of Fig. 1 shows that the first sleeve part 7 and the second sleeve part 8 are two separate elements.
- the first sleeve part 7 has a first thickness ti,i and a second thickness t 1,2 , the second thickness being larger than the first thickness. Between the first thickness and the second thickness, a first wall 15 is arranged. The first thickness is positioned closest to the second sleeve 12.
- the second sleeve part 8 has a first thickness t 2,1 and a second thickness t 2,2 , the first thickness being larger than the second thickness.
- the second opening 9 is positioned in the part of the second sleeve part 8 having the first thickness t 2,1 .
- a second wall 16 is arranged between the first thickness t 2,1 and the second thickness t 2,2 .
- the first wall 15 and the second wall 16 are positioned opposite each other, with a distance between them defining a cavity 17 as shown in Fig. 1 .
- the second sleeve part 8 is, in the shown embodiment, capable of sliding along the axial axis 4 independently of the first sleeve part 7 until the second wall 16 abuts the first wall. This will be described further below in connection with Figs. 2 and 3 .
- first sleeve part 7 has a first end 18 and a second end 19, and the second sleeve 12 has a first end 20 and a second end 21, the first end 18 of the first sleeve part 7 abutting the second end 21 of the second sleeve 12 in the first position as shown in Fig. 1 .
- the second sleeve 12 may assist in sliding the first sleeve part 7 when the second sleeve part 8 is connected to the second sleeve 12 via the engagement element 13 and the second sleeve part 8 is moved along the axial axis 4.
- the first sleeve part 7 is a third sleeve 7 which abuts the second sleeve part 8, the first sleeve part 7 and the second sleeve part 8 yet still being slidable in relation to each other.
- the third sleeve 7 is arranged between the second sleeve part 8 and the base tubular 3.
- the second sleeve 12 of Fig. 1 has a through-going bore 26 in which the engagement element 13 is arranged.
- the engagement element 13 has a length which is larger than a thickness of the second sleeve 12.
- the through-going bore 26 is considerably larger than the width of the engagement element 13, so that a spring 27 may be arranged in connection with the engagement element 13.
- the spring 27 exerts a force on the engagement element 13 towards the base tubular 3, whereby the engagement element 13 is spring-loaded when engaging the indentation 14 in the second sleeve part 8 and will disengage the indentation 14 as soon as it is possible for the engagement element 13 to move in a radial direction away from the axial axis 4.
- the spring 27 is a leaf spring; however, other springs may be used, such as a helical spring arranged around the engagement element 13.
- the base tubular 3 has a recess 28 arranged opposite the second sleeve 12.
- the recess 28 is adapted to receive the engagement element 13 at the second position as shown in Figs. 2 and 3 .
- the recess 28 has a first recess end 70 and a second recess end 71, the second recess end 71 being closest to the first opening (not shown in Fig. 5 ).
- the first recess end 71 has a first end face 73 which is inclined, and the second recess end 71 has a second end face 74 extending in a direction substantially perpendicular to the axial axis 4.
- the inclined first end face 73 of the recess 28 is configured to disengage the engagement element 13 from the recess 28 by the engagement element 13 sliding up via the inclined first end face 73 from the recess 28 during the movement of the second sleeve 12 in the second direction.
- the second sleeve part 8 has an inner face 29 and at least one groove 30 in the inner face 29 for engagement with a key tool of a downhole tool (not shown).
- the second sleeve part 8 has a first end 31 and a second end 32, and a groove 30 is arranged in each end.
- an inside groove 33 is arranged between the second sleeve 12 and the first end 31, causing the second sleeve part 8 to be capable of moving in relation to the second sleeve 12 when the engagement element 13 has disengaged the indentation 14 in the second sleeve part 8.
- first, second and third sleeves and the first and second sleeve parts may be made of metal.
- Fig. 2 the first sleeve 6 of the downhole flow control device 1 of Fig. 1 is shown in an intermediate position which is the second position of the second sleeve.
- the first sleeve 6 of the downhole flow control device 1 is shown in a third position and open position of the downhole flow control device 1 in which the first and second openings are aligned.
- the second end 21 of the second sleeve 12 is still in this intermediate position abutting the first end 18 of the first sleeve part 7, whereby the second sleeve has pushed the first sleeve part 7 to this position.
- the second end 21 of the second sleeve 12 is arranged substantially at the first opening 5.
- the second sleeve 12 is prevented from sliding past the first opening 5 when the engagement element 13 is in engagement in the recess 28 and abuts the second end face 74 of the recess 28.
- the second sealing element 23 is arranged opposite the second sleeve 12.
- the first opening 5 is not aligned with the second opening 9 of the second sleeve part 8, whereby no fluid communication between the borehole 2 and the well tubular structure 10 is provided.
- Fig. 3 the downhole flow control device 1 is shown in the third position, wherein the first opening 5 is aligned with the second opening 9, so that fluid communication between the borehole 2 and the well tubular structure 10 is provided.
- a gap 80 is formed between the second end 21 of the second sleeve 12 and the first end 18 of the first sleeve part 7 when the second sleeve 12 is prevented from movement in the first direction, since the engagement element 13 is abutting the second end face of the recess and the first sleeve part 7 continues to move past the first opening 5, whereby fluid communication between the first opening 5 and the second opening 9 is provided via the gap 80.
- the second sleeve part 8 has been disengaged from the second sleeve 12 and has been moved further to the right.
- the engagement element 13 has engaged the recess 28, whereby the second sleeve 12 is prevented from moving further to the right as described above.
- the wall 16 of the second sleeve part will, after a little distance, abut the wall 15 of the first sleeve part 7, whereby the second sleeve part 8 will push the first sleeve part 7.
- the first sleeve part 7 will start moving away from the second sleeve 12, and thereby, a distance between the second sleeve 12 and the first sleeve part 7 will be provided.
- the second opening 9 will also be moved towards the position of the first opening 5, and these two openings will then be aligned, providing fluid communication between the borehole 2 and the well tubular structure 10.
- a circumferential opening between them is created, and when the second opening 9 is aligned with the first opening 5, the openings are also aligned with the circumferential opening between the sleeves 6, 12.
- first end 31 of the second sleeve part 8 has been moved towards the second sleeve 12 by minimising the inside groove 33.
- first end 31 abuts the end of the second sleeve 12 facing the first end 31 of the second sleeve part 8.
- the first opening 5 and the second opening 9 have substantially the same width along the axial axis 4.
- the second opening 9 has a larger width than the first opening 5, so that if scale or debris precipitate, the second opening is just minimised but not minimised to be smaller than the first opening 5.
- the second sleeve part 8 may comprise a plurality of second openings, and the base tubular 3 may also comprise a plurality of first openings.
- FIG. 4 an enlarged partial view of the engagement element 13 is shown engaged in the indentation 14 of the second sleeve part 8.
- the second sleeve 12 is connected with the second sleeve part 8 and thereby follows the second sleeve part 8 when the second sleeve part 8 is being moved.
- the engagement element 13 comprises a first element part 35 and a second element part 36.
- the first element part 35 has a larger width than the second element part 36 which defines a protrusion 37 between the two element parts 35, 36.
- This protrusion is adapted for receiving the spring 27 so that the spring 27 exerts a force against the protrusion 37 in order to force the engagement element 13 in a radial outwards direction which is the upwards direction in Fig. 4 and away from the indentation 14.
- the engagement element 13 is prevented from disengaging the indentation due to the wall of the base tubular 3.
- the second sleeve part 8 has been moved to the second position as shown in Fig. 2 , where the engagement element 13 is positioned opposite the recess 28 in the base tubular 3.
- the spring 27 forces the engagement element 13 radially outwards into the recess 28, and thereby, the engagement element 13 disengages the indentation 14. Consequently, the connection between the second sleeve 12 and the second sleeve part 8 is disengaged, whereby the second sleeve part 8 may be moved independently of the second sleeve 12, and the second sleeve 12 is then securely positioned in relation to the base tubular 3 since the engagement element 13 has engaged the recess 28.
- the base tubular may be mounted from at least two tubular sections.
- the first sleeve part 7 and the second sleeve part 8 is produced as one sleeve 6.
- the procedure of aligning the first opening 5 in the base tubular 3 with the second opening 9 in the second sleeve part 8 for providing fluid communication between the borehole 2 and the well tubular structure 10 is performed in substantially the same manner as described above in connection with the embodiment shown in Figs. 1-3 , except from the first sleeve part 7 and the second sleeve part 8 not being able to move independently of each other.
- the downhole flow control device 1 may be arranged within an inside groove or cavity of the well tubular structure 10 as shown in Fig. 6 .
- the base tubular may have an elongated projection extending along the axial axis for pressing the engagement element in engagement with the second sleeve and the second sleeve part until reaching the second position, and then, the elongated projection ends and the engagement element disengages the second sleeve part.
- the engagement element may be a spring-loaded circlip.
- the flow control device 1 may be a frac port or an inflow control device or a valve.
- Fig. 7 shows a downhole system 100 for producing hydrocarbon-containing fluid from a reservoir 40 downhole.
- the downhole well system 100 comprises a well tubular structure 10 having an inside 41 for conducting the well fluid to surface.
- the downhole system 100 comprises a first annular barrier 50 and a second annular barrier 51 to isolate a production zone 101 when the annular barriers are expanded.
- Each annular barrier comprises a tubular part 52 adapted to be mounted as part of the well tubular structure 10 by means of a thread, an expandable metal sleeve 53 surrounding the tubular part and an annular space 54 between the inner sleeve face of the expandable sleeve and the tubular part.
- the expandable metal sleeve 53 has an inner sleeve face 55 facing the tubular part and an outer sleeve face 56 facing a wall 57 of a borehole 2, each end of the expandable sleeve being connected with the tubular part, which provides the isolating barrier when the expandable sleeve is expanded.
- the downhole system 100 further comprises a downhole flow control device 1 mounted as part of the well tubular structure 10 and arranged between the first and the second annular barriers opposite the production zone 101 for controlling a flow of a fluid from the borehole 2 into the well tubular structure 10 and/or from the well tubular structure 10 into the borehole 2.
- a downhole flow control device 1 mounted as part of the well tubular structure 10 and arranged between the first and the second annular barriers opposite the production zone 101 for controlling a flow of a fluid from the borehole 2 into the well tubular structure 10 and/or from the well tubular structure 10 into the borehole 2.
- fluid or well fluid any kind of fluid that may be present in oil or gas wells downhole, such as natural gas, oil, oil mud, crude oil, water, etc.
- gas is meant any kind of gas composition present in a well, completion, or open hole
- oil is meant any kind of oil composition, such as crude oil, an oil-containing fluid, etc.
- Gas, oil, and water fluids may thus all comprise other elements or substances than gas, oil, and/or water, respectively.
- a casing, production casing or well tubular structure is meant any kind of pipe, tubing, tubular, liner, string etc. used downhole in relation to oil or natural gas production.
- the well tubular structure may be made of metal.
- a downhole tractor can be used to push the tool all the way into position in the well.
- the downhole tractor may have projectable arms having wheels, wherein the wheels contact the inner surface of the casing for propelling the tractor and the tool forward in the casing.
- a downhole tractor is any kind of driving tool capable of pushing or pulling tools in a well downhole, such as a Well Tractor®.
Description
- The present invention relates to a downhole flow control device for controlling a flow of a fluid from a borehole into a well tubular structure and/or from the well tubular structure into the borehole. Furthermore, the present invention relates to a downhole system.
- When valves, frac ports and inflow control devices, e.g. known from
US2012/325500 ,WO2013/150304 andEP0224942 , are arranged as part of a well tubular structure downhole, it is often experienced that scales and debris are settling in openings of the valves, ports and devices. In particular, this is experienced inside the well tubular structure, causing the flow area in the openings to be decreased and in some circumstances even closed for flow, resulting in the valves, ports and devices not functioning properly. - Furthermore, as scales and debris are settling in the openings of the valves, ports and inflow control devices, sealing elements arranged in connection with the openings may be damaged, and this may disadvantageously lead to leakage from the valves, ports or devices, even in circumstances where they are supposed to be closed.
- It is an object of the present invention to wholly or partly overcome the above disadvantages and drawbacks of the prior art. More specifically, it is an object to provide an improved downhole flow control device minimising the risk of scales and debris settling, and hence opening and closing of the flow control device is facilitated.
- The above objects, together with numerous other objects, advantages and features, which will become evident from the below description, are accomplished by a solution in accordance with the present invention as defined in
claim 1. - The second sleeve may be engaged with the second sleeve part in the first position and is disengaged from the second sleeve part in the second position.
- The first position may be an initial position of the downhole flow control device.
- Moreover, the second sleeve may have a through-going bore in which the engagement element is arranged.
- Further, the base tubular may have an elongated projection extending along the axial axis for pressing the engagement element in engagement with the second sleeve until reaching the second position.
- Also, the base tubular may have a recess for receiving the engagement element at the second position.
- Additionally, the downhole control device may be configured to open the first opening by movement of the first sleeve and the second sleeve in a first direction along the axial axis and to close the first opening by movement of the first sleeve and the second sleeve in a second direction, the second direction being the opposite direction in relation to the first direction, along the axial axis.
- The recess may have a first recess end and a second recess end, the second recess end being closest to the first opening, the first recess end having a first end face which is inclined and the second recess end having a second end face extending in a direction substantially perpendicular to the axial axis.
- Moreover, the second sleeve may be prevented from sliding past the first opening when the engagement element is in engagement in the recess and abuts the second end face.
- Furthermore, the inclined first end face of the recess may be configured to disengage the engagement element from the recess by the engagement element sliding up from the recess along the movement of the second sleeve in the second direction.
- Additionally, the engagement element may be spring-loaded.
- The engagement element may be a spring-loaded circlip.
- Furthermore, the engagement element may comprise a spring.
- Said spring may be a leaf spring.
- Also, the downhole flow control device may comprise a plurality of engagement elements.
- The downhole flow control device as described above may further comprise a first sealing element and a second sealing element, the first sealing element being arranged in a first circumferential groove in the base tubular on a first side of the first opening and the second sealing element being arranged in a second circumferential groove in the base tubular on a second side of the first opening, the second side being opposite the first side.
- Furthermore, the sealing elements may be chevron seals.
- Additionally, the first sealing element may be arranged between the first sleeve part and the base tubular, and the second sealing element may be arranged between the first sleeve part and the base tubular in the first position and between the second sleeve and the base tubular in the second position.
- The second sleeve part may comprise a plurality of second openings.
- In addition, the first sleeve part and the second sleeve part may be produced as one sleeve.
- Further, the first sleeve part may be a third sleeve which may be connected with the second sleeve part.
- Moreover, the third sleeve may be arranged between the second sleeve part and the base tubular.
- The first sleeve part may have a first end and a second end, and the second sleeve may have a first end and a second end, the first end of the first sleeve part abutting the second end of the second sleeve in the first position.
- Also, a gap may be formed between the second end of the second sleeve and the first end of the first sleeve part when the second sleeve is prevented from movement in the first direction and the first sleeve part continues to move past the first opening, whereby fluid communication between the first opening and the second opening is provided via the gap.
- Furthermore, the second sleeve part may have an inner face and a groove in the inner face for engagement with a key tool of a downhole tool.
- Additionally, the base tubular may be mounted from at least two tubular sections.
- Moreover, the first opening may be smaller than the second opening.
- The flow control device may be a frac port or an inflow control device or a valve.
- Further, the openings may be through-going.
- The present disclosure also relates to a downhole system for controlling a flow of a fluid from a borehole into a well tubular structure and/or from the well tubular structure into the borehole, comprising
- a well tubular structure, and
- a downhole flow control device as described above.
- The downhole system as described above may further comprise an annular barrier, the annular barrier comprising:
- a tubular part adapted to be mounted as part of the well tubular structure, the tubular part having an outer face,
- an expandable sleeve surrounding the tubular part and having an inner sleeve face facing the tubular part and an outer sleeve face facing the wall of the borehole, each end of the expandable sleeve being connected with the tubular part, and
- an annular space between the inner sleeve face of the expandable sleeve and the tubular part.
- Furthermore, the annular barrier may be a first annular barrier, and the system as described above may further comprise a second annular barrier, both adapted to be expanded in an annulus between the well tubular structure and a wall of the borehole or another well tubular structure downhole for providing zone isolation of a production zone positioned between the first and second annular barriers, the downhole flow control device being arranged opposite the production zone.
- Moreover, one or both ends of the expandable sleeve may be connected with the tubular part by means of connection parts.
- Furthermore, the expandable sleeve may be made of metal.
- In addition, the tubular part may be made of metal.
- Further, an opening may be arranged in the tubular part.
- Additionally, sealing means may be arranged between the connection part and the tubular part or between the end of the expandable sleeve and the tubular part.
- Moreover, the annular space may comprise a second sleeve.
- The downhole system may comprise a plurality of flow control devices.
- The disclosure and its many advantages will be described in more detail below with reference to the accompanying schematic drawings, which for the purpose of illustration show some non-limiting embodiments and in which
-
Figs. 1-3 show, in a cross-sectional view, the downhole flow control device according to the present invention in different positions, -
Figs. 4-5 show enlarged partial cross-sectional views of an engagement element in an engaged position in an indentation and in a disengaged position, -
Fig. 6 shows in a cross-sectional view another downhole flow control device, and -
Fig. 7 shows a downhole system. - All the figures are highly schematic and not necessarily to scale, and they show only those parts which are necessary in order to elucidate the teaching of the disclosure, other parts being omitted or merely suggested.
-
Fig. 1 shows an embodiment of a downholeflow control device 1 according to the present disclosure in a cross-sectional view. The downholeflow control device 1 is adapted to control a flow of a fluid from aborehole 2 into a welltubular structure 10 and/or from the welltubular structure 10 into theborehole 2. - The downhole
flow control device 1 comprises a base tubular 3 having anaxial axis 4 and being adapted to be mounted as part of the welltubular structure 10, the base tubular 3 having afirst opening 5. Thefirst opening 5 is arranged opposite theborehole 2. The downholeflow control device 1 furthermore comprises afirst sleeve 6 which is arranged within thebase tubular 3. Thefirst sleeve 6 has afirst sleeve part 7 and asecond sleeve part 8 with asecond opening 9. Thefirst sleeve 6 is adapted to slide along theaxial axis 4 for at least partly aligning thefirst opening 5 with thesecond opening 9, so that fluid communication may be provided between theborehole 2 and an inside 11 of the welltubular structure 10. Accordingly, thedownhole control device 1 is configured to open thefirst opening 5 by movement of thefirst sleeve 6 and thesecond sleeve 12 in a first direction along theaxial axis 4 and to close thefirst opening 5 by movement of thefirst sleeve 6 and thesecond sleeve 12 in a second direction, the second direction being the opposite direction in relation to the first direction, along theaxial axis 4. - Furthermore, a
second sleeve 12 is arranged at least partly between thesecond sleeve part 8 and thebase tubular 3, and anengagement element 13 is arranged for engaging anindentation 14 of thesecond sleeve part 8 in a first position which is the position shown inFig. 1 . In the first position, the first and second openings are unaligned, and the downholeflow control device 1 is in its closed position in which no well fluid is allowed to flow into the well tubular structure. Theengagement element 13 is furthermore adapted to disengage theindentation 14 of thesecond sleeve part 8 in a second position when the first andsecond sleeves axis 4 in relation to the base tubular. The second position is shown inFigs. 2 and3 . - When the
engagement element 13 is engaged in theindentation 14 of thesecond sleeve part 8, thesecond sleeve 12 will slide along theaxial axis 4 together with thefirst sleeve 6, until theengagement element 13 disengages theindentation 14, causing thefirst sleeve 6 to be capable of sliding further along theaxial axis 4 without thesecond sleeve 12 following along. - When the downhole
flow control device 1 is in its closed position, the first and second sleeves abut each other, preventing scale or debris from precipitating as there is no opening therebetween to precipitate in. Hence, the disadvantages with scales and other debris settling in the openings and thereby minimising or even closing off the flow possibilities through the openings when these are aligned, are eliminated, as the opening is not created until the first sleeve is moved away from the second sleeve. - In addition, the downhole
flow control device 1 also comprises afirst sealing element 22 and asecond sealing element 23. Thefirst sealing element 22 is arranged in a firstcircumferential groove 24 in the inner face of thebase tubular 3 on a first side of thefirst opening 5. Thesecond sealing element 23 is arranged in a secondcircumferential groove 25 in thebase tubular 3 on a second side of thefirst opening 5, where the second side is opposite the first side. Preferably, the sealingelements - The
first sealing element 22 is arranged between thefirst sleeve part 7 and thebase tubular 3. Thesecond sealing element 23 is arranged between thefirst sleeve part 7 and thebase tubular 3 in the first position, as shown inFig. 1 , and between thesecond sleeve 12 and thebase tubular 3 in the second position, as shown inFig. 3 . Due to the fact that the first sleeve and the second sleeve abut each other when passing the second sealing elements, the risk of the sealing elements being damaged is minimised, and it is hence obtained that their sealing properties are maintained, since the opening is not created until the second sleeve has passed thesecond sealing element 23. - The embodiment of
Fig. 1 shows that thefirst sleeve part 7 and thesecond sleeve part 8 are two separate elements. Thefirst sleeve part 7 has a first thickness ti,i and a second thickness t1,2, the second thickness being larger than the first thickness. Between the first thickness and the second thickness, afirst wall 15 is arranged. The first thickness is positioned closest to thesecond sleeve 12. - In the same manner, the
second sleeve part 8 has a first thickness t2,1 and a second thickness t2,2, the first thickness being larger than the second thickness. Thesecond opening 9 is positioned in the part of thesecond sleeve part 8 having the first thickness t2,1. Between the first thickness t2,1 and the second thickness t2,2, asecond wall 16 is arranged. Thefirst wall 15 and thesecond wall 16 are positioned opposite each other, with a distance between them defining acavity 17 as shown inFig. 1 . Thesecond sleeve part 8 is, in the shown embodiment, capable of sliding along theaxial axis 4 independently of thefirst sleeve part 7 until thesecond wall 16 abuts the first wall. This will be described further below in connection withFigs. 2 and3 . - Furthermore, the
first sleeve part 7 has afirst end 18 and asecond end 19, and thesecond sleeve 12 has afirst end 20 and asecond end 21, thefirst end 18 of thefirst sleeve part 7 abutting thesecond end 21 of thesecond sleeve 12 in the first position as shown inFig. 1 . Hereby, thesecond sleeve 12 may assist in sliding thefirst sleeve part 7 when thesecond sleeve part 8 is connected to thesecond sleeve 12 via theengagement element 13 and thesecond sleeve part 8 is moved along theaxial axis 4. - In
Fig. 1 , thefirst sleeve part 7 is athird sleeve 7 which abuts thesecond sleeve part 8, thefirst sleeve part 7 and thesecond sleeve part 8 yet still being slidable in relation to each other. Thethird sleeve 7 is arranged between thesecond sleeve part 8 and thebase tubular 3. - The
second sleeve 12 ofFig. 1 has a through-going bore 26 in which theengagement element 13 is arranged. Theengagement element 13 has a length which is larger than a thickness of thesecond sleeve 12. The through-going bore 26 is considerably larger than the width of theengagement element 13, so that aspring 27 may be arranged in connection with theengagement element 13. Thespring 27 exerts a force on theengagement element 13 towards thebase tubular 3, whereby theengagement element 13 is spring-loaded when engaging theindentation 14 in thesecond sleeve part 8 and will disengage theindentation 14 as soon as it is possible for theengagement element 13 to move in a radial direction away from theaxial axis 4. InFig. 1 , thespring 27 is a leaf spring; however, other springs may be used, such as a helical spring arranged around theengagement element 13. - The
base tubular 3 has arecess 28 arranged opposite thesecond sleeve 12. Therecess 28 is adapted to receive theengagement element 13 at the second position as shown inFigs. 2 and3 . Thus, when thesleeves axial axis 4, theengagement element 13 is maintained in engagement with theindentation 14 until it reaches therecess 28, causing the spring-loadedengagement element 13 to be forced in the radial direction, hence disengaging theindentation 14 by engaging therecess 28. - With reference to
Fig. 5 , therecess 28 has afirst recess end 70 and asecond recess end 71, thesecond recess end 71 being closest to the first opening (not shown inFig. 5 ). Thefirst recess end 71 has afirst end face 73 which is inclined, and thesecond recess end 71 has asecond end face 74 extending in a direction substantially perpendicular to theaxial axis 4. The inclinedfirst end face 73 of therecess 28 is configured to disengage theengagement element 13 from therecess 28 by theengagement element 13 sliding up via the inclinedfirst end face 73 from therecess 28 during the movement of thesecond sleeve 12 in the second direction. - Furthermore, with reference to
Fig. 1 , thesecond sleeve part 8 has aninner face 29 and at least onegroove 30 in theinner face 29 for engagement with a key tool of a downhole tool (not shown). InFig 1 , thesecond sleeve part 8 has afirst end 31 and asecond end 32, and agroove 30 is arranged in each end. At thefirst end 31 of thesecond sleeve part 8, aninside groove 33 is arranged between thesecond sleeve 12 and thefirst end 31, causing thesecond sleeve part 8 to be capable of moving in relation to thesecond sleeve 12 when theengagement element 13 has disengaged theindentation 14 in thesecond sleeve part 8. - In the cross-sectional view of the downhole
flow control device 1 shown inFig. 1 , only asingle engagement element 13 is shown. However, a plurality ofengagement elements 13 may be arranged in the downhole flow control device. The first, second and third sleeves and the first and second sleeve parts may be made of metal. - In
Fig. 2 , thefirst sleeve 6 of the downholeflow control device 1 ofFig. 1 is shown in an intermediate position which is the second position of the second sleeve. - In
Fig. 3 , thefirst sleeve 6 of the downholeflow control device 1 is shown in a third position and open position of the downholeflow control device 1 in which the first and second openings are aligned. - In this intermediate second position, the first and
second sleeve parts second sleeve 12 have been moved to the right until theengagement element 13 has reached therecess 28, whereby theengagement element 13 disengages theindentation 14 of thesecond sleeve part 8 and at the same time engages therecess 28. - The
second end 21 of thesecond sleeve 12 is still in this intermediate position abutting thefirst end 18 of thefirst sleeve part 7, whereby the second sleeve has pushed thefirst sleeve part 7 to this position. Thesecond end 21 of thesecond sleeve 12 is arranged substantially at thefirst opening 5. In fact, thesecond sleeve 12 is prevented from sliding past thefirst opening 5 when theengagement element 13 is in engagement in therecess 28 and abuts thesecond end face 74 of therecess 28. In this intermediate position, thesecond sealing element 23 is arranged opposite thesecond sleeve 12. - In the intermediate position shown in
Fig. 2 , thefirst opening 5 is not aligned with thesecond opening 9 of thesecond sleeve part 8, whereby no fluid communication between theborehole 2 and the welltubular structure 10 is provided. - In
Fig. 3 , the downholeflow control device 1 is shown in the third position, wherein thefirst opening 5 is aligned with thesecond opening 9, so that fluid communication between theborehole 2 and the welltubular structure 10 is provided. - As shown in
Fig. 3 , agap 80 is formed between thesecond end 21 of thesecond sleeve 12 and thefirst end 18 of thefirst sleeve part 7 when thesecond sleeve 12 is prevented from movement in the first direction, since theengagement element 13 is abutting the second end face of the recess and thefirst sleeve part 7 continues to move past thefirst opening 5, whereby fluid communication between thefirst opening 5 and thesecond opening 9 is provided via thegap 80. - With reference to the intermediate position shown in
Fig. 2 , thesecond sleeve part 8 has been disengaged from thesecond sleeve 12 and has been moved further to the right. Theengagement element 13 has engaged therecess 28, whereby thesecond sleeve 12 is prevented from moving further to the right as described above. - When the
second sleeve part 8 of the first sleeve is moved along the axial axis without thesecond sleeve 12, thewall 16 of the second sleeve part will, after a little distance, abut thewall 15 of thefirst sleeve part 7, whereby thesecond sleeve part 8 will push thefirst sleeve part 7. Thus, thefirst sleeve part 7 will start moving away from thesecond sleeve 12, and thereby, a distance between thesecond sleeve 12 and thefirst sleeve part 7 will be provided. Furthermore, thesecond opening 9 will also be moved towards the position of thefirst opening 5, and these two openings will then be aligned, providing fluid communication between theborehole 2 and the welltubular structure 10. When moving the first sleeve away from the second sleeve, a circumferential opening between them is created, and when thesecond opening 9 is aligned with thefirst opening 5, the openings are also aligned with the circumferential opening between thesleeves - Furthermore, the
first end 31 of thesecond sleeve part 8 has been moved towards thesecond sleeve 12 by minimising theinside groove 33. InFig. 3 , thefirst end 31 abuts the end of thesecond sleeve 12 facing thefirst end 31 of thesecond sleeve part 8. - In
Figs. 1-3 , thefirst opening 5 and thesecond opening 9 have substantially the same width along theaxial axis 4. However, inFig. 6 , thesecond opening 9 has a larger width than thefirst opening 5, so that if scale or debris precipitate, the second opening is just minimised but not minimised to be smaller than thefirst opening 5. - Even though not shown, the
second sleeve part 8 may comprise a plurality of second openings, and thebase tubular 3 may also comprise a plurality of first openings. - In
Fig. 4 , an enlarged partial view of theengagement element 13 is shown engaged in theindentation 14 of thesecond sleeve part 8. In this position, thesecond sleeve 12 is connected with thesecond sleeve part 8 and thereby follows thesecond sleeve part 8 when thesecond sleeve part 8 is being moved. - The
engagement element 13 comprises afirst element part 35 and asecond element part 36. Thefirst element part 35 has a larger width than thesecond element part 36 which defines aprotrusion 37 between the twoelement parts spring 27 so that thespring 27 exerts a force against theprotrusion 37 in order to force theengagement element 13 in a radial outwards direction which is the upwards direction inFig. 4 and away from theindentation 14. However, theengagement element 13 is prevented from disengaging the indentation due to the wall of thebase tubular 3. - In
Fig. 5 , thesecond sleeve part 8 has been moved to the second position as shown inFig. 2 , where theengagement element 13 is positioned opposite therecess 28 in thebase tubular 3. In this position, thespring 27 forces theengagement element 13 radially outwards into therecess 28, and thereby, theengagement element 13 disengages theindentation 14. Consequently, the connection between thesecond sleeve 12 and thesecond sleeve part 8 is disengaged, whereby thesecond sleeve part 8 may be moved independently of thesecond sleeve 12, and thesecond sleeve 12 is then securely positioned in relation to thebase tubular 3 since theengagement element 13 has engaged therecess 28. - When the fluid communication between the borehole and the well tubular structure shall be closed, the above-mentioned provision of fluid communication is performed in reverse order.
- Even though not shown, the base tubular may be mounted from at least two tubular sections.
- In
Fig. 6 , thefirst sleeve part 7 and thesecond sleeve part 8 is produced as onesleeve 6. The procedure of aligning thefirst opening 5 in thebase tubular 3 with thesecond opening 9 in thesecond sleeve part 8 for providing fluid communication between theborehole 2 and the welltubular structure 10 is performed in substantially the same manner as described above in connection with the embodiment shown inFigs. 1-3 , except from thefirst sleeve part 7 and thesecond sleeve part 8 not being able to move independently of each other. The downholeflow control device 1 may be arranged within an inside groove or cavity of the welltubular structure 10 as shown inFig. 6 . - In addition, the base tubular may have an elongated projection extending along the axial axis for pressing the engagement element in engagement with the second sleeve and the second sleeve part until reaching the second position, and then, the elongated projection ends and the engagement element disengages the second sleeve part. Also, the engagement element may be a spring-loaded circlip.
- The
flow control device 1 according to the present disclosure may be a frac port or an inflow control device or a valve. -
Fig. 7 shows a downhole system 100 for producing hydrocarbon-containing fluid from a reservoir 40 downhole. The downhole well system 100 comprises a welltubular structure 10 having an inside 41 for conducting the well fluid to surface. - The downhole system 100 comprises a first annular barrier 50 and a second annular barrier 51 to isolate a production zone 101 when the annular barriers are expanded. Each annular barrier comprises a tubular part 52 adapted to be mounted as part of the well
tubular structure 10 by means of a thread, an expandable metal sleeve 53 surrounding the tubular part and an annular space 54 between the inner sleeve face of the expandable sleeve and the tubular part. The expandable metal sleeve 53 has an inner sleeve face 55 facing the tubular part and an outer sleeve face 56 facing a wall 57 of aborehole 2, each end of the expandable sleeve being connected with the tubular part, which provides the isolating barrier when the expandable sleeve is expanded. - The downhole system 100 further comprises a downhole
flow control device 1 mounted as part of the welltubular structure 10 and arranged between the first and the second annular barriers opposite the production zone 101 for controlling a flow of a fluid from theborehole 2 into the welltubular structure 10 and/or from the welltubular structure 10 into theborehole 2. - By fluid or well fluid is meant any kind of fluid that may be present in oil or gas wells downhole, such as natural gas, oil, oil mud, crude oil, water, etc. By gas is meant any kind of gas composition present in a well, completion, or open hole, and by oil is meant any kind of oil composition, such as crude oil, an oil-containing fluid, etc. Gas, oil, and water fluids may thus all comprise other elements or substances than gas, oil, and/or water, respectively.
- By a casing, production casing or well tubular structure is meant any kind of pipe, tubing, tubular, liner, string etc. used downhole in relation to oil or natural gas production. The well tubular structure may be made of metal.
- In the event that the tool is not submergible all the way into the well tubular structure, a downhole tractor can be used to push the tool all the way into position in the well. The downhole tractor may have projectable arms having wheels, wherein the wheels contact the inner surface of the casing for propelling the tractor and the tool forward in the casing. A downhole tractor is any kind of driving tool capable of pushing or pulling tools in a well downhole, such as a Well Tractor®.
- It will be evident for a person skilled in the art that several modifications are conceivable without departing from the invention as defined by the following claims.
Claims (13)
- A downhole flow control device (1) for controlling a flow of a fluid from a borehole (2) into a well tubular structure (10) or from the well tubular structure into the borehole, comprising:- a base tubular (3) having an axial axis (4) and adapted to be mounted as part of the well tubular structure, the base tubular having a first opening (5),- a first sleeve (6) arranged within the base tubular (3), the first sleeve having a first sleeve part (7) and a second sleeve part (8) with a second opening (9), and the first sleeve (6) being adapted to slide along the axial axis (4) for at least partly aligning the first opening (5) with the second opening (9),wherein a second sleeve (12) is arranged at least partly between the second sleeve part (8) and the base tubular (3), and characterised in that the second sleeve has a through-going bore in which an engagement element (13) is arranged for engaging an indentation (14) of the second sleeve part (8) in a first position and for disengaging the indentation of the second sleeve part (8) in a second position,
wherein the base tubular (3) has a recess (28) for receiving the engagement element (13) at the second position,
wherein the recess (28) has a first recess end (70) and a second recess (71), the second recess end (71) being closest to the first opening (5), the first recess end having a first end face (73) which is inclined and the second recess end having a second end face (74) extending in a direction substantially perpendicular to the axial axis (4),
the second sleeve (12) is prevented from sliding past the first opening (5) when the engagement element (13) is in engagement in the recess (28) and abuts the second end face (74),
wherein the first sleeve part (7) has a first end (18) and a second end, (19) and the second sleeve (12) has a first end (20) and a second end (21), the first end of the first sleeve part (7) abutting the second end of the second sleeve (12) in the first position, and
wherein a gap (80) is formed between the second end (21) of the second sleeve (12) and the first end (18) of the first sleeve part (7) when the second sleeve (12) is prevented from movement in a first direction and the first sleeve part continues to move in the first direction past the first opening (5), whereby fluid communication between the first opening (5) and the second opening (9) is provided via the gap (80). - A downhole flow control device (1) according to claim 1, wherein the second sleeve (12) is engaged with the second sleeve part (8) in the first position and is disengaged from the second sleeve part (8) in the second position.
- A downhole flow control device (1) according to any of claims 1-2, wherein the downhole control device is configured to open the first opening (5) by movement of the first sleeve (6) and the second sleeve (12) in a first direction along the axial axis (4) and to close the first opening (5) by movement of the first sleeve (6) and the second sleeve (12) in a second direction, the second direction being the opposite direction in relation to the first direction, along the axial axis.
- A downhole flow control device (1) according to claim 1, wherein the inclined first end face (73) of the recess is configured to disengage the engagement element (13) from the recess (28) by the engagement element (13) sliding up from the recess during the movement of the second sleeve (12) in the second direction.
- A downhole flow control device (1) according to any of claims 1-4, further comprising a first sealing element (22) and a second sealing element (23), the first sealing element being arranged in a first circumferential groove (24) in the base tubular (3) on a first side of the first opening (5) and the second sealing element being arranged in a second circumferential groove (25) in the base tubular on a second side of the first opening, the second side being opposite the first side.
- A downhole flow control device (1) according to claim 5, wherein the first sealing element (22) is arranged between the first sleeve part (7) and the base tubular (3), and the second sealing element (23) is arranged between the first sleeve part (7) and the base tubular (3) in the first position and between the second sleeve (12) and the base tubular (3) in the second position.
- A downhole flow control device (1) according to any of claims 1-6, wherein the engagement element (13) is spring-loaded.
- A downhole flow control device (1) according to any of claims 1-7, wherein the first sleeve part (7) and the second sleeve part (8) are produced as one sleeve.
- A downhole flow control device (1) according to any of claims 1-8, wherein the first sleeve part (7) is a third sleeve which is connected with the second sleeve part (8).
- A downhole flow control device (1) according to any of claims 1-9, wherein the second sleeve part (8) has an inner face (29) and a groove (30) in the inner face for engagement with a key tool of a downhole tool.
- A downhole flow control device (1) according to any of claims 1-10, wherein the flow control device (1) is a frac port or an inflow control device or a valve.
- A downhole system (100) for controlling a flow of a fluid from a borehole (2) into a well tubular structure (10) or from the well tubular structure (10) into the borehole (2), comprising- a well tubular structure (10), and- a downhole flow control device (1) according to any of the preceding claims.
- A downhole system (100) according to claim 12, further comprising an annular barrier (50, 51), the annular barrier comprising:- a tubular part (52) adapted to be mounted as part of the well tubular structure (10), the tubular part having an outer face,- an expandable sleeve (53) surrounding the tubular part and having an inner sleeve face (55) facing the tubular part and an outer sleeve face (56) facing the wall of the borehole, each end of the expandable sleeve being connected with the tubular part, and- an annular space (54) between the inner sleeve face of the expandable sleeve and the tubular part.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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EP14174961.4A EP2963232A1 (en) | 2014-06-30 | 2014-06-30 | A downhole flow control device |
PCT/EP2015/064704 WO2016001141A1 (en) | 2014-06-30 | 2015-06-29 | A downhole flow control device |
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EP3161246A1 EP3161246A1 (en) | 2017-05-03 |
EP3161246B1 true EP3161246B1 (en) | 2020-10-07 |
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Application Number | Title | Priority Date | Filing Date |
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EP14174961.4A Withdrawn EP2963232A1 (en) | 2014-06-30 | 2014-06-30 | A downhole flow control device |
EP15731378.4A Active EP3161246B1 (en) | 2014-06-30 | 2015-06-29 | A downhole flow control device |
Family Applications Before (1)
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EP14174961.4A Withdrawn EP2963232A1 (en) | 2014-06-30 | 2014-06-30 | A downhole flow control device |
Country Status (10)
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US (1) | US10385655B2 (en) |
EP (2) | EP2963232A1 (en) |
CN (1) | CN106460485B (en) |
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CN107313738B (en) * | 2017-09-06 | 2019-12-20 | 刘书豪 | Fluid separation device, well structure, and method for producing oil or natural gas |
US20220389786A1 (en) * | 2021-06-02 | 2022-12-08 | Halliburton Energy Services, Inc. | Sealing assembly for wellbore operations |
WO2023122826A1 (en) * | 2021-12-30 | 2023-07-06 | Ncs Multistage Inc. | Valve assemblies for high-temperature wells |
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- 2014-06-30 EP EP14174961.4A patent/EP2963232A1/en not_active Withdrawn
-
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- 2015-06-29 AU AU2015282638A patent/AU2015282638B2/en not_active Ceased
- 2015-06-29 WO PCT/EP2015/064704 patent/WO2016001141A1/en active Application Filing
- 2015-06-29 EP EP15731378.4A patent/EP3161246B1/en active Active
- 2015-06-29 BR BR112016029422A patent/BR112016029422A2/en active Search and Examination
- 2015-06-29 CN CN201580031846.4A patent/CN106460485B/en not_active Expired - Fee Related
- 2015-06-29 MX MX2016017134A patent/MX2016017134A/en unknown
- 2015-06-29 CA CA2952748A patent/CA2952748A1/en not_active Abandoned
- 2015-06-29 US US15/322,563 patent/US10385655B2/en not_active Expired - Fee Related
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- 2015-06-29 MY MYPI2016002233A patent/MY186095A/en unknown
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US20120325500A1 (en) * | 2011-06-22 | 2012-12-27 | Terje Moen | Well-based fluid communication control assembly |
WO2013150304A2 (en) * | 2012-04-03 | 2013-10-10 | Petrowell Limited | Wellbore completion |
Also Published As
Publication number | Publication date |
---|---|
CN106460485B (en) | 2020-02-07 |
WO2016001141A1 (en) | 2016-01-07 |
RU2017100123A3 (en) | 2019-02-11 |
CN106460485A (en) | 2017-02-22 |
RU2017100123A (en) | 2018-07-30 |
AU2015282638B2 (en) | 2018-07-26 |
RU2698358C2 (en) | 2019-08-26 |
EP2963232A1 (en) | 2016-01-06 |
EP3161246A1 (en) | 2017-05-03 |
BR112016029422A2 (en) | 2017-08-22 |
CA2952748A1 (en) | 2016-01-07 |
MX2016017134A (en) | 2017-05-03 |
AU2015282638A1 (en) | 2017-02-02 |
US20170122066A1 (en) | 2017-05-04 |
MY186095A (en) | 2021-06-21 |
US10385655B2 (en) | 2019-08-20 |
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